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Add a memmove(3) benchmark.

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Change-Id: I9c0ffae0b5aae29521b7e68e5ce2318b5a401cba
This commit is contained in:
Elliott Hughes 2012-11-09 14:59:21 -08:00
parent 49677deca2
commit fbe44ec043
1 changed files with 16 additions and 0 deletions
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16
tests/string_benchmark.cpp
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@ -62,6 +62,22 @@ static void BM_memcpy(int iters, int nbytes) {
} }
BENCHMARK(BM_memcpy)->AT_COMMON_SIZES; BENCHMARK(BM_memcpy)->AT_COMMON_SIZES;
static void BM_memmove(int iters, int nbytes) {
StopBenchmarkTiming();
char* buf = new char[nbytes + 64];
memset(buf, 'x', nbytes + 64);
StartBenchmarkTiming();
for (int i = 0; i < iters; i++) {
memmove(buf, buf + 1, nbytes); // Worst-case overlap.
}
StopBenchmarkTiming();
SetBenchmarkBytesProcessed(int64_t(iters) * int64_t(nbytes));
delete[] buf;
}
BENCHMARK(BM_memmove)->AT_COMMON_SIZES;
static void BM_memset(int iters, int nbytes) { static void BM_memset(int iters, int nbytes) {
StopBenchmarkTiming(); StopBenchmarkTiming();
char* dst = new char[nbytes]; char* dst = new char[nbytes];